The REK bookcase below was designed to incorporate the needs of readers with any number of books, well apart from those lucky enough to have an entire library! The design allows the shelves to slide over each other horizontally, opening up the unit to providing different quantities of space for the books.

The unit is by the Architect Reinier de Jong and has such a clever simplicity to its concept and function. The product makes me wonder if the same kind of technique could be used architecturally. A building or pavilion, that can almost lock down when unused and then mechanically open itself out, appropriate to its required function.